Synthesis and application of a high-capacity and stable few-layer molybdenum selenide-collagen-derived carbon composite potassium-ion battery anode material

A collagen and battery negative electrode technology, applied in battery electrodes, nanotechnology for materials and surface science, secondary batteries, etc., can solve problems such as capacity fading, improve potassium storage performance, volume buffer conductivity, and promote The effect of improving reaction kinetics

Active Publication Date: 2022-07-12
FUJIAN NORMAL UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But since MoSe 2 Due to the high surface energy of the two-dimensional nanostructure, its nanosheets are prone to agglomeration, resulting in rapid capacity decay

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Synthesis and application of a high-capacity and stable few-layer molybdenum selenide-collagen-derived carbon composite potassium-ion battery anode material
  • Synthesis and application of a high-capacity and stable few-layer molybdenum selenide-collagen-derived carbon composite potassium-ion battery anode material
  • Synthesis and application of a high-capacity and stable few-layer molybdenum selenide-collagen-derived carbon composite potassium-ion battery anode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Weigh a certain quality of discarded cowhide (referring to the discarded cowhide with hair), ultrasonically pre-treat it, then cut it into pieces with scissors, add 0.5% of the raw material mass to dissolve it, then salt out, and finally freeze-dry and grind it. Crushed to get collagen powder;

[0026] 2) Weigh 1 g of collagen powder and 3 g of molybdenum acetylacetonate into 0.2 L of deionized water, stir rapidly for 12 h, centrifuge and dry in an oven at 70 °C;

[0027] 3) Grind the bulk solid obtained in step 2) into powder, then weigh the solid powder and selenium powder with a mass ratio of 1:3 and place them in two corundum boats respectively, and place them in a volume ratio of 95%Ar / 5%H. 2 After calcination at 700 °C for 4 hours in an atmosphere tube furnace, a black solid sample was collected, which is a high-capacity and stable few-layer molybdenum selenide-collagen-derived carbon composite potassium ion battery anode material—few-layer molybdenum selenide- ...

Embodiment 2

[0030] 1) Weigh a certain quality of discarded cowhide (referring to the discarded cowhide with hair), ultrasonically pre-treat it, then cut it into pieces with scissors, add papain accounting for 0.7% of the raw material mass to dissolve, then salt out, and finally freeze-dry and grind. Crushed to get collagen powder.

[0031] 2) Weigh 1 g of collagen powder and 4 g of sodium molybdate respectively, add them to 0.3 L of deionized water, stir rapidly for 10 h and centrifuge, and then place them in an oven at 80 °C for drying;

[0032] 3) Grind the bulk solid obtained in step 2) into powder, then weigh the solid powder and selenium powder with a mass ratio of 1:2 and place them in two corundum boats, respectively, and place them in 95%Ar / 5%H 2 calcined at 600 °C for 5 hours in an atmosphere tube furnace, and a black solid sample was collected, which was a few-layer molybdenum selenide-collagen-derived carbon composite;

[0033] The few-layer molybdenum selenide-collagen-derive...

Embodiment 3

[0035] 1) Weigh a certain quality of discarded cowhide (referring to the discarded cowhide with hair), ultrasonically pre-treat it, then cut it into pieces with scissors, add trypsin that accounts for 1% of the raw material mass to dissolve, then salt out, and finally freeze-dry and grind it. Crushed to get collagen powder.

[0036] 2) Weigh 1 g of collagen powder and 5 g of molybdenum acetylacetonate respectively, add them to 0.4 L of deionized water, quickly stir for 24 h and centrifuge, and then place them in an oven at 90 °C for drying;

[0037] 3) Grind the bulk solid obtained in step 2) into powder, then weigh the solid powder and selenium powder with a mass ratio of 1:3 and place them in two corundum boats, respectively, and place them in 95%Ar / 5%H 2 calcined at 800 °C for 4 hours in an atmosphere tube furnace, and collected a black solid sample, which is a few-layer molybdenum selenide-collagen-derived carbon composite;

[0038] The few-layer molybdenum selenide-colla...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses the synthesis and application of a high-capacity and stable few-layer molybdenum selenide-collagen-derived carbon composite potassium ion battery negative electrode material, wherein the molybdenum selenide in the material is a few-layer nanostructure; the collagen The in-situ N and S heteroatom doping in the derived carbon can strengthen the combination of the derived carbon and the few-layer molybdenum selenide, make the structure more stable, and then improve its potassium storage performance. The technical scheme is as follows: firstly, collagen powder and molybdenum source extracted from waste cow hair in the tanning industry are added into deionized water, stirred at room temperature for a certain period of time, centrifuged and dried, and finally selenized to obtain few-layer selenization Molybdenum-Collagen Derived Carbon Complex. The results show that the electrochemical performance of the potassium ion battery anode material is excellent. The synthesis process is simple, the operability is strong, and at the same time, the green and high-value utilization of wastes in the tanning industry meets the needs of the national resource recycling strategy.

Description

technical field [0001] The invention belongs to the field of potassium ion battery materials, and in particular relates to a synthesis method and application of a high-capacity and stable few-layer molybdenum selenide-collagen-derived carbon composite. Background technique [0002] Currently, with the continuous development of electric vehicles and smart grids, there is an increasing demand for next-generation energy storage devices with high energy density and long cycle life. However, the scarcity and uneven distribution of lithium resources on earth limit its large-scale application. Potassium-ion batteries (PIBs) have a similar working principle to Li / Na-ion batteries, and the natural abundance of potassium resources is relatively high and the price is low, so they have received extensive attention. In addition, with Na + / Na compared to K + The standard redox potential of / K is lower, which can be converted into higher energy density, so potassium-ion batteries are e...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/58H01M4/62H01M10/054B82Y30/00B82Y40/00
CPCH01M4/366H01M4/362H01M4/581H01M4/625H01M4/62H01M10/054B82Y30/00B82Y40/00Y02E60/10
Inventor 曾令兴康碧玉许丽洪钱庆荣陈庆华罗奋强黄宝铨肖荔人薛珲
Owner FUJIAN NORMAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap